linux-kernel - Re: [PATCH v2 07/10] ARM64: dts: rockchip: Add power key to GeekBox

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Date:	Mon, 8 Feb 2016 17:26:04 +0100
From:	Julien Chauveau <chauveau.julien@...il.com>
To:	Andreas Färber <afaerber@...e.de>
Cc:	linux-rockchip@...ts.infradead.org,
	Heiko Stuebner <heiko@...ech.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 07/10] ARM64: dts: rockchip: Add power key to GeekBox

Hello Andreas,

> Le 8 févr. 2016 à 03:17, Andreas Färber <afaerber@...e.de> a écrit :
> 
> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
> v2: New
> 
> arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts b/arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts
> index e84383fd6f10..fe5aa785cfda 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts
> @@ -70,6 +70,22 @@
> 		pinctrl-0 = <&ir_int>;
> 	};
> 
> +	keys: gpio-keys {
> +		compatible = "gpio-keys";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&pwr_key>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;

I think #address-cells and #size-cells are not necessary.

> +
> +		button@0 {
> +			reg = <0>;

reg can be removed too.

> +			gpio-key,wakeup = <1>;

You should use the new "wakeup-source » property.

> +			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
> +			label = "GPIO Power";
> +			linux,code = <116>;

#include <dt-bindings/input/input.h>
and use KEY_POWER instead of 116

> +		};
> +	};
> +
> 	leds: gpio-leds {
> 		compatible = "gpio-leds";
> 
> @@ -265,6 +281,12 @@
> 		};
> 	};
> 
> +	keys {
> +		pwr_key: pwr-key {
> +			rockchip,pins = <0 2 RK_FUNC_GPIO &pcfg_pull_up>;

Is there a reason you want to enable the internal pull-up resistor on this pin?

The schematic shows there's already an external pull-up resistor so the internal one should not be needed.


> +		};
> +	};
> +
> 	pmic {
> 		pmic_sleep: pmic-sleep {
> 			rockchip,pins = <0 0 RK_FUNC_2 &pcfg_pull_none>;